Jcop Card ATR Customization

I need a skilled professional to initialize and customize the ATR on a Jcop card (J2A040).

Requirements:
- Set specific communication parameters
- Modify historical bytes to include a custom data string
- Custom data string should contain transaction-specific information

Ideal Skills:
- Experience with Jcop cards
- Familiarity with ATR customization
- Understanding of historical bytes and data strings
- Background in secure transaction protocols